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4238081 = 10394079
BaseRepresentation
bin10000001010101100000001
321222022112222
4100022230001
52041104311
6230500425
751010631
oct20125401
97868488
104238081
112435151
121504715
13b55053
147c46c1
1558aadb
hex40ab01

4238081 has 4 divisors (see below), whose sum is σ = 4243200. Its totient is φ = 4232964.

The previous prime is 4238077. The next prime is 4238093. The reversal of 4238081 is 1808324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4238081 - 22 = 4238077 is a prime.

It is a super-2 number, since 2×42380812 = 35922661125122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4238081.

It is not an unprimeable number, because it can be changed into a prime (4238011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001 + ... + 3078.

It is an arithmetic number, because the mean of its divisors is an integer number (1060800).

Almost surely, 24238081 is an apocalyptic number.

It is an amenable number.

4238081 is a deficient number, since it is larger than the sum of its proper divisors (5119).

4238081 is a wasteful number, since it uses less digits than its factorization.

4238081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 4238081 is about 2058.6600010687. The cubic root of 4238081 is about 161.8290250220.

The spelling of 4238081 in words is "four million, two hundred thirty-eight thousand, eighty-one".

Divisors: 1 1039 4079 4238081